K8028 Kit suddenly stopped working

Hi, I bought the K8028 kit and made my own dawn alarm clock for the fraction of the price from other retailers. It was working a treat and very happy, went through the self test and set up the time delay to have the light turn on to full power over 15 min to wake me up gently - all was good with the world.

Suddenly after 2 months of perfect use it has stopped working with LED 6 flashes which from the fault table that there is something wrong with the current zero-cross circuit.

Load fuse is fine. I have no idea how to test if the K8028 is faulty but I have noticed that I have 240V in but 162V load out to the lamp?

Have you any advice on what components could possibly make this happen?